Tamika inflates and ties off a balloon in her classroom and then takes it outside on a cold, winter day. immediately, she notices that the balloon has gotten a little bit smaller. why does this occur?

Thermal expansion and contraction (air)

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.